The flooded Hetch Hetchy Valley stores water from the Tuolemne River, for San Francisco. (Photo: San Francisco PUC)

Often compared to Yosemite Valley in grandeur, Hetch Hetchy Valley has been flooded since the construction of O’Shaughnessy Dam in the 1920’s. Water from the reservoir serves the City and County of San Francisco but activists have long argued that it’s not needed, and that the Valley’s original attributes are more valuable. Continue reading →